全文获取类型
收费全文 | 1059篇 |
免费 | 19篇 |
国内免费 | 3篇 |
专业分类
教育 | 719篇 |
科学研究 | 75篇 |
各国文化 | 17篇 |
体育 | 115篇 |
文化理论 | 22篇 |
信息传播 | 133篇 |
出版年
2023年 | 4篇 |
2022年 | 15篇 |
2021年 | 18篇 |
2020年 | 20篇 |
2019年 | 35篇 |
2018年 | 48篇 |
2017年 | 47篇 |
2016年 | 46篇 |
2015年 | 29篇 |
2014年 | 39篇 |
2013年 | 197篇 |
2012年 | 36篇 |
2011年 | 36篇 |
2010年 | 39篇 |
2009年 | 34篇 |
2008年 | 32篇 |
2007年 | 49篇 |
2006年 | 31篇 |
2005年 | 31篇 |
2004年 | 29篇 |
2003年 | 31篇 |
2002年 | 21篇 |
2001年 | 20篇 |
2000年 | 9篇 |
1999年 | 10篇 |
1998年 | 13篇 |
1997年 | 6篇 |
1996年 | 10篇 |
1995年 | 6篇 |
1994年 | 8篇 |
1993年 | 4篇 |
1991年 | 7篇 |
1989年 | 6篇 |
1988年 | 4篇 |
1987年 | 11篇 |
1986年 | 4篇 |
1985年 | 8篇 |
1984年 | 5篇 |
1983年 | 6篇 |
1982年 | 5篇 |
1981年 | 4篇 |
1977年 | 4篇 |
1976年 | 6篇 |
1975年 | 5篇 |
1973年 | 6篇 |
1972年 | 4篇 |
1971年 | 4篇 |
1970年 | 4篇 |
1968年 | 3篇 |
1966年 | 3篇 |
排序方式: 共有1081条查询结果,搜索用时 15 毫秒
71.
Eric C. Haakonssen Martin Barras Louise M. Burke David G. Jenkins David T. Martin 《European Journal of Sport Science》2016,16(6):645-653
The aims of this study were to describe normative values and seasonal variation of body composition in female cyclists comparing female road and track endurance cyclists, and to validate the use of anthropometry to monitor lean mass changes. Anthropometric profiles (seven site skinfolds) were measured over 16 years from 126 female cyclists. Lean mass index (LMI) was calculated as body weight?×?skinfolds?x. The exponent (x) was calculated as the slope of the natural logarithm of body weight and skinfolds. Percentage changes in LMI were compared to lean mass changes measured using dual-energy X-ray absorptiometry (DXA) in a subset of 25 road cyclists. Compared to sub-elite and elite cyclists, world class cyclists were (mean [95% CI]) 1.18?kg [0.46, 1.90] and 0.60?kg [0.05, 1.15] lighter and had skinfolds that were 7.4?mm [3.8, 11.0] and 4.6?mm [1.8, 7.4] lower, respectively. Body weight (0.41?kg [0.04, 0.77]) and skinfolds (4.0?mm [2.1, 6.0]) were higher in the off-season compared to the early-season. World class female road cyclists had lower body weight (6.04?kg [2.73, 9.35]) and skinfolds (11.5?mm [1.1, 21.9]) than track endurance cyclists. LMI (mean exponent 0.15 [0.13, 0.18]) explained 87% of the variance in DXA lean mass. In conclusion, higher performing female cyclists were lighter and leaner than their less successful peers, road cyclists were lighter and leaner than track endurance cyclists, and weight and skinfolds were lowest early in the season. LMI appears to be a reasonably valid tool for monitoring lean mass changes. 相似文献
72.
73.
74.
75.
76.
77.
78.
The neurobiology of language: Practical applications 总被引:1,自引:1,他引:0
Eric H. Lenneberg 《Annals of dyslexia》1970,20(1):7-13
79.
Valuing the Arts: A Contingent Valuation Approach 总被引:5,自引:3,他引:2
Eric Thompson Mark Berger Glenn Blomquist Steven Allen 《Journal of Cultural Economics》2002,26(2):87-113
Government funding of the arts has received considerable attention in the United States in recent years. Efforts to cut funding to the National Endowment for the Arts and declining budgets for state arts agencies have raised questions about how much individuals value the arts. This paper applies the contingent valuation method to assess this value, using surveys of random households and of arts patrons. Our analysis estimated a mean willingness to pay (WTP) among all Kentucky households from $6 to$27, depending on the estimation technique used and on whether the scenario discussed is to increase arts performances by 25 per cent, or to avoid a 25per cent or 50 per cent decrease in the number of performances. Among arts patron households, the mean WTP ranges from $61 to $132.Consumer demand for arts performances in large part follows a predictable pattern. The likelihood of respondents agreeing to make the donation that is requested rises as the size of the donation decreases. The likelihood is higher to avoid a 50 per cent decline in performances than to avoid a 25 percent decline in performances. The mean WTP rises with income, and arts patron households have a much higher WTP than all households. WTP rises with on-site use factors such as frequency of attendance. The WTP also rises for arts patrons households with off-site use such as watching arts events on television or reading about the arts in newspapers and magazines. 相似文献
80.